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VD2, VD4/Low-Voltage Detectors
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R5440N2xxA
9
TEST CIRCUITS
2
1
5
3
4
oscilloscope
2
1
5
3
4
oscilloscope
Test Circuit 1
Test Circuit 2
2
1
5
3
4
oscilloscope
2
Iol=3mA
V
1
5
3
4
Test Circuit 3
Test Circuit 4
2
Iol=0.3mA
V
1
5
3
4
2
A
1
5
3
4
Test Circuit 5
Test Circuit 6
2
A
1
5
3
4
2
A
1
5
3
4
Test Circuit 7
Test Circuit 8
R5440N2xxA
10
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R5440N2xxA
11
TYPICAL CHARACTERISTICS
1)
Minimum Input Voltage vs. Temperature
R5440N202A
0.8
1.2
1.0
0.4
0.6
0.2
0.0
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Minim
um
Input V
oltage V
DD
(V)
2)
Over-Voltage Detector Threshold of Cell-1 vs.
Temperature
3)
Over-Voltage Detector Threshold of Cell-2 vs.
Temperature
R5440N202A
R5440N202A
1.75
1.85
1.80
1.65
1.70
1.60
1.55
1.50
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Ov
er-V
oltage Detector
Threshold of CELL1
V
DET1
(V)
V
DET1
V
REL1
1.75
1.85
1.80
1.65
1.70
1.60
1.55
1.50
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Ov
er-V
oltage Detector
Threshold of CELL2
V
DET2
(V)
V
DET2
V
REL2
4)
Low-Voltage Detector Threshold of Cell-1 vs.
Temperature
5)
Low-Voltage Detector Threshold of Cell-2 vs.
Temperature
R5440N202A
R5440N202A
0.90
0.85
0.80
0.75
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Lo
w-V
oltage Detector
Threshold of CELL1
V
DET3
(V)
V
DET3
V
REL3
0.90
0.85
0.80
0.75
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Lo
w-V
oltage Detector
Threshold of CELL2
V
DET4
(V)
V
DET4
V
REL4
R5440N2xxA
12
6)
Output Delay of Over-voltage vs. Temperature
7)
Output Delay of Release from Over-Voltage vs.
Temperature
R5440N202A
R5440N202A
30
25
20
15
10
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Output
V
oltage of Ov
er-V
oltage tV
DET
(mS)
30
25
20
15
10
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Output Dela
y Release from
V
oltage tV
REL
(mS)
8)
Oscillator Frequency vs. Temperature
9)
Oscillator Duty Cycle vs. Temperature
R5440N202A
R5440N202A
15
14
13
12
11
10
9
8
6
5
7
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Oscillator F
requency f
osc (KHz)
13
12
11
10
9
8
7
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Oscullator Duty Cycle (%)
10) Nch ON Voltage vs. Temperature
11) Pch ON Voltage vs. Temperature
R5440N202A
R5440N202A
0.15
0.12
0.09
0.06
0.03
0.00
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Nch
ON V
oltage V
OL
(V)
4.0
3.9
3.8
3.7
3.6
3.5
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Pch
ON V
oltage V
OH
(V)
R5440N2xxA
13
12) Input Current of SENSE1 pin vs. Temperature
13) Input Current of SENS2 Pin vs. Temperature
R5440N202A
R5440N202A
2.0
1.5
1.0
0.5
0.0
Temperature Topt (
C)
-50
50
100
0
-25
75
25
SENS1 Input Current of I
SENS1
(
A)
2.0
1.5
1.0
0.5
0.0
Temperature Topt (
C)
-50
50
100
0
-25
75
25
SENS2 Input Current of I
SENS2
(
A)
14) Supply Current 1 vs. Temperature
15) Supply Current 2 vs. Temperature
R5440N202A
R5440N202A
10
8
6
4
2
0
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Supply Current 1 I
SS1
(
A)
30
15
25
20
10
5
0
Temperature Topt (
C)
-50
50
100
0
-25
75
25
Supply Current 2 I
SS2
(
A)
R5440N2xxA
14
TYPICAL APPLICATION
R5440N2XXA
OUT
1N4001A
2SB1028E
GND
AC/DC
Converter
AC
R2
1K
R1
R3
1K
C1
1
F
SENS1
SENS2
V
DD
1K
TECHNICAL NOTES
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R5440N2xxA
15
TIMING DIAGRAM
V
DET1
V
REL1
V
REL3
V
DET3
SENS1
SENS2
t
V
DET2
V
REL2
V
REL4
V
DET4
SENS2
GND
t
V
DD
GND
OUT
t
tV
REL
10
S
100
S
tV
DET
tV
REL
tV
DET
tV
REL
tV
DET
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